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Thread: Easy (lazy) Chord Player

  1. #1

    Easy (lazy) Chord Player

    Hello,

    I am happy to present a MIDI controller I have designed to play chords progressions. It's fun to play and very inspirational.
    You can play chords and bass lines together. The chords choice is big. There are 20 different chords per note. Chord structures are stored in a user bank so you can create and save your own very special sophisticated chords if needed.
    Here is a brief presentation of the main features :


    And a small demo when hooked with ableton Live :


    Feedback welcome !
    Emmanuel

  2. #2
    Here are a few pics :
    Click image for larger version. 

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  3. #3
    Senior Member+ defragster's Avatar
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    Cool.
    What's up with all the buttons and hardware?

  4. #4
    Hello,
    The buttons and pots are basic MIDI controls you can map to your DAW.
    The hardware ICs are generic multiplexers. They read the 168 keys plus the MIDI controls and commands. MUXs are easy to deal with. I thought it would be a hassle, but it was in fact the easy part.
    For me, the hardest part was to deal with the logic when you press multiple keys at the same time. You have to track which notes have been triggered, and how many times. Otherwise you get "stuck notes" when yo release the keys.
    Emmanuel

  5. #5
    Senior Member+ defragster's Avatar
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    The 14 buttons per note - are they touch sense? Nice uniform layout - just wondering what is under that colored label system.

  6. #6
    All keys are touch sensitive. It's made with Velostat sheets. This material is very cheap and the result is surprisingly accurate. Each key work as a shunt mode FSR :
    https://butlertechnologies.com/shunt-mode-vs-thru-mode/
    The result is ultra thin, very reactive easier to read compare to piezzo sensors.

  7. #7
    Senior Member+ defragster's Avatar
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    Very cool. Looks like a lot of nice work and features packed in that setup

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